﻿/////////////////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2009 Eric Bowen
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and 
// associated documentation files (the "Software"), to deal in the Software without restriction, including 
// without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
// copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the 
// following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial 
// portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
/////////////////////////////////////////////////////////////////////////////////////////////////////
// Author's blog: http://blog.scrappydog.com
// Updated source code available:  http://scrappydb.codeplex.com
/////////////////////////////////////////////////////////////////////////////////////////////////////

using System;
using System.Reflection;
using System.Web.Caching;
using Amazon.SimpleDB;
using NLog;
using ScrappyDB.Utilities;

namespace ScrappyDB
{
    public partial class Db :  IDb
    {
        private static readonly Logger Log = LogManager.GetCurrentClassLogger();

        private AmazonSimpleDB _service;

        public Db()
        {
        }

        public Db(Cache cache)
        {
            WebCache = cache;
        }

        #region IDb Members

        public Cache WebCache { get; set; }

        public AmazonSimpleDB Service
        {
            get
            {
                if (string.IsNullOrEmpty(Configuration.AccessKeyId))
                    throw new Exception("Missing or empty AccessKeyId key in <appSettings>");

                if (string.IsNullOrEmpty(Configuration.SecretAccessKey))
                    throw new Exception("Missing or empty SecretAccessKey key in <appSettings>");

                if (Configuration.RunningConfig.ToUpper().Contains("MOCK"))
                    throw new Exception("Attempted to use MockDB config without using the Repository");

                var config = new AmazonSimpleDBConfig();

                if (!string.IsNullOrEmpty(Configuration.ProxyHost))
                    config.ProxyHost = Configuration.ProxyHost;

                if (!string.IsNullOrEmpty(Configuration.ProxyPort))
                    config.ProxyPort = int.Parse(Configuration.ProxyPort);

                if (!string.IsNullOrEmpty(Configuration.ServiceURL))
                    config.ServiceURL = Configuration.ServiceURL;

                config.SignatureMethod = "HmacSHA1";

                if (_service == null)
                    _service = new AmazonSimpleDBClient(Configuration.AccessKeyId, Configuration.SecretAccessKey, config);


                return _service;
            }
            set { _service = value; }
        }

        public string EntityCacheKey(string domainName, string id)
        {
            return domainName + "-" + id;
        }

        public void Dispose()
        {
            Log.Info("DB.Dispose() called");

            if (_service != null)
                _service.Dispose();
        }

        #endregion
    }
}